Flying machine



April 5,1927. I 1,623,613

\ M. M ARNDT FIJYING MACHINE Filed Nov. 6, 1925 2'3 /W I Max MArpcf Z Fatented Apr. 5, l$27.

NITED STATES MAX M. ARNDT, OF MANITOWOC, WISCONSIN.

FLYING Manama Application filedltovember 6, 1925. Serial No. 87,283.

This invention relates to flying machines. Ob ects of this invention are to provide a novel form of flying machine in which a pair of propellers are 'll'lOllIltQtl on each side of the body of the machine, and may be shifted about a transverse. axis through the machine while they are in operation to thus vary the angle along which the force of the pro ieller acts.

l urther objects are to provide a novel form of flying machine in which the weight is so proportioned as to increase the stability of the machine and maintain the bodyportion in approximately a horizontal. line during flight.

An embodiment of the invention is shown in the accompanying drawings, in which Figure 1 is a plan view partly broken away of the machine.

Figure 2 is a side elevation of the machine. Figure 3 is a detail showing the ad'usting mechanism for varying the angle of t e propeller shafts.

Figure 4 is a sectional view through one of the adjusting shafts. i .t Referring td the drawings, it will be seen that the flyingmachine comprises a body portion provided with a head or nose 1 and with a rearwardly projecting portion 2 rovidedwith a tail 3 and a rudder 4. his body portion has outwardly projecting parts 5 on opposite sides. These parts 5 are tubular and carry an adjustable disk 6.

for the gears of the propeller shafts and may, if desired, carry additional supports 8 for the housing 9 of the propeller shafts to increase the rigidity of these parts. The propeller shafts carry forward and rear propellers 10 and 11 and such propellers are positioned centrally of the machine .and'

within the depressed portion 15 of the body, as shown in Figure 2. Thus, the weight 14- is positioned a material distance below the center about which the. propeller shafts may be rocked. i 1

The means for adjustingthe angle of the The disks or heads in turn carry the housings 7 propeller shafts is at all times under the control of the operator as he sits in the rock pit, the opening of which is indicated by the reference character 16 in Figure i. This adjusting mechanism comprises a pair of manually operated shafts 17 which are carried in supports 18 and 19. These shafts carry at their outer ends small pinions 20 which mesh with the internal gear '21 curried by the disk 6 for each of the shafts 7.

In order to hold the shaft 7 against inadvertent rotation, a collar 22 is splined to inch of the shafts 12'', as most clearly shown in Figure at. This collar 22 carries a pin 23 which, as may be seen from Figure 1. is adapted to seat in any one of several apertures formed in the inner bearing 18 for the shaft 17. Thus when it is desired to adjust the angle of the propeller shafts, the collar 22 may he slid inwardly against the action of the spring 24 to free the pin 23. Thereafter, the shaft 17'is rotated and the motion is transmitted through the reduction gear to the disk 6, consequently shifting the angle of the propeller shaft. I

In operation, it will be seen that the angle through which the force of the propellers act may be varied at the will of the operator and that such force acts along a line above the weighted portion of the machine. Consequently great stability will be secured and this stabilitywill ,be inherent in the 'machine and independent of the skill of the operator.

Further, it is to be noted that by varying the angle of the propeller shafts that the machine may he made to rise or advance or both as desired.

' In ordertoproperly support the machine four wheels are provided, namely, a front wheel 25, a rear wheel 26 and a pair of laterally arranged intermediate wheels 27, such wheels being carried in any suitable form of frame-work, as indicated in Fig ure 2.

It is to be noted that the pairs of 1-0- pellers are independently driven and their speed can be independently controlled to facilitate turning and other 0 rations.

Further, itis to be noted t at the angle through which the force of each pair of propellers acts may be independently T varied to thus. facilitate. maneuvering-sue:

as banking, turning and similar operations.

Itwill be seen that a very sii'np e t pe of flyingmachine. has been provided w lab is of novel construction, which has the-propellers in tandem on opposite sides of the Although the invention has been described in conside able detail, it, is to be understood that the invention may be variously embodied and is, therefore, to be limited only as claimed.

It is to be understood that this invention "isnpplicable to other types of flying n'nichines than the one illustrated in the drawings, for instance, it may be applied to dirigibles or other flying machines of this type to aid the machine in rising or any other maneuvering".

ll claim:

Ii. A flying machine comprising at body portion, a pair of revolubly mounted heads on opposite sides of the body portion, :1 relatively large gear csrried by each head, a relatively smell pinion meshing with each gear, manually operated means for rotating and locking said pinions, a pair of propellers located on each side of said body portion with their shafts carried-by said heads, and :1 driving motor for each pair of propellers, said driving motors being lo- (rated within the body portion, said propellers constituting: the sole sustaining means for said flying machine and being adapted to be set at an angle to the horizontal to provide both a propelling and alifting force. A flying machine comprising a body portion, at pair of propellers arranged in tandem on each side of the body portion, power means for driving said propellers, the propellers of each pair having the same axis, and a stabilizing weight carried by the body portion and located below the axial lines of said propellers, said weight being fixed in position with reference to said body portion, and said body portion housing the power driving means and said Weight.

in testimony that I claim the foregoing l have hereunto set my hand at Manitowoc, in the county of Manitow oq-snd Stete of lViscons'in, October 8th, 1925.

MAX n. ARNDT. 

